SharePlay 인앱 메시지 구현 가이드

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override var nibName: String {
  return "ModalVideoViewController"
}
   
/// Overriding loadView() from ABKInAppMessageModalViewController to provide our own view for the in-app message
override func loadView() {
  Bundle.main.loadNibNamed(nibName, owner: self, options: nil)
}

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func configureVideoPlayer() {
  guard let urlString = inAppMessage.extras?["video_url"] as? String,
        let url = URL(string: urlString) else { return }
     
  let videoTitle = inAppMessage.extras?["video_title"] as? String
  mediaItem = MediaItem(title: videoTitle ?? "Video Content", url: url)
     
  let asset = AVAsset(url: url)
  let playerItem = AVPlayerItem(asset: asset)
  player.replaceCurrentItem(with: playerItem)
  playerViewController.player = player
   
  addChild(playerViewController)
  videoPlayerContainer.addSubview(playerViewController.view)
  playerViewController.didMove(toParent: self)
}

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struct MediaItem: Hashable, Codable {
  let title: String
  let url: URL
}
 
@available(iOS 15, *)
struct MediaItemActivity: GroupActivity {
  static let activityIdentifier = "com.book-demo.GroupWatching"
 
  let mediaItem: MediaItem
   
  var metadata: GroupActivityMetadata {
    var metadata = GroupActivityMetadata()
    metadata.type = .watchTogether
    metadata.title = mediaItem.title
    metadata.fallbackURL = mediaItem.url
    return metadata
  }
}

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private var subscriptions = Set<AnyCancellable>()  
private var selectedMediaItem: MediaItem? {
  didSet {
    // Ensure the UI selection always represents the currently playing media.
    guard let _ = selectedMediaItem else { return }
 
    if !BrazeManager.shared.inAppMessageCurrentlyVisible {
      BrazeManager.shared.logCustomEvent("SharePlay Event")
    }
  }
}  
 
private func launchVideoPlayerIfNecessary() {
  CoordinationManager.shared.$enqueuedMediaItem
      .receive(on: DispatchQueue.main)
      .compactMap { $0 }
      .assign(to: \.selectedMediaItem, on: self)
      .store(in: &subscriptions)
}

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override func viewDidDisappear(_ animated: Bool) {
  super.viewDidDisappear(animated)
  groupSession?.leave()
  CoordinationManager.shared.leave()
}
 
class CoordinationManager() {
...
  // Published values that the player, and other UI items, observe.
  @Published var enqueuedMediaItem: MediaItem?
  @Published var groupSession: GroupSession<MediaItemActivity>?
 
  // Clear activity when the user leaves
  func leave() {
    groupSession = nil
    enqueuedMediaItem = nil
  }
...
}

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private var isEligibleForSharePlay: Bool = false {
  didSet {
    sharePlayButton.isHidden = !isEligibleForSharePlay
  }
}
 
override func viewDidLoad() {
  super.viewDidLoad()
 
  // SharePlay button eligibility
  groupStateObserver.$isEligibleForGroupSession
    .receive(on: DispatchQueue.main)
    .assign(to: \.isEligibleForSharePlay, on: self)
    .store(in: &subscriptions)
}